Track rail supporting device



June 13, 1939. H, M.\AusT|N Er Al.

'I'RACK RAIL SUPKORTING DEVICE Filed May 15, 1936 H .Ja

Patented June13, 1939*y UNITE-o 'STATES PATENT ort-fics Md., assignors to Crown Cork Seal Company, Inc.,` Baltimore, Md., a corporation` of New Application May15, 1938, VSerial No. 80,018

2 Clillil.` (Cl. 23H83) The present-invention relates to ,track rail supporting devices.

The `principal objectof the invention is to provide a structure forA supporting the rails of I 'tracks in such a manner` as to deaden sound and permit the rail to be `insulated from the road bed.

It has heretofore 'been proposed to support the rails .of tracks in such a manner that sound would lbe deadened by the `use of an interposed resilient member. However, the resilient members ordinarily provided for this` purpose `have been formed of material of suchnature that they are not resilient under all conditions. For example, most resilient materials a're only compressible when in an unconned position. that is, where they may expand in one direction when weight is transmitted to them .from another direction. Thus, when a block of rubber is-used as a resilient supporting member, and weight is transmitted to it from above, therubber block must be free to expand laterally if it is to serve as a vibration absorption element, This has permitted lateral movement of the track, rendering it altogether unsafe. Also., the resilient members heretofore provided have not been of such design, form or material as to resist wear or to stand up beneath the tremendous strains imposed thereon.

Other objects and advantages of the invention willbe apparent from ,the following drawing wherein Figure 1 is a transverse section through the rail supporting device applied tok a `track rail; 35 Figure 2 isa side elevation and Figure 3 is a detail sectional view of the vibration absorbing structure preferably used in the fastener.

Referring to the drawing, the numeral I deso supporting device of o ur invention, `generally indicated by the numeral I2. The rail vsupporting Idevice comprises a seat member I3 having upstanding side walls I4 extending in a. direction parallel with the length of the rail and forming,

in cooperation with Athe upper face i5 of the seat member, a seat for the track rail. Ears i6 1 ignates a track rail secured to a tie Il by the -v 'The `rail is positioned in the seatk of the base member I3 upon a vibration absorbing structurer `or member 2l. The seat of the supporting: device is of greater width than thek width of the base of the rail to be supported thereon, thereby leavy ing space for 4the insertion of vertically arranged vibration absorbing structures or members 2i between the edges of the yrail base and the inner surface of-the walls Il. As shown in Figure 1, themembers'2I-abut against the side edges of the member 20. Upon the upper surfaces of the rail base are positioned vibration supportingy structures or members 22 with their inner edges abutting against the inner surfaces of the vertically arranged vibration absorbing structures 2l, the members 22 being pressed downwardly against the base flange of the rail by the clamp the underside of the seat member` I3 and in augment Iwith the inner portion of the kerf I1 so that wood screws or spikes may be used to hold the clampinglmembers I9 in position, the lower portion of each' such screw or spike then extending through the aperture 28 into the tie l I.

Figure 3 illustrates the detail construction of the vibration supporting structures or members 20, 2l and 22, the structure of Figure 3 being designated by the numeral 20. As is shown in Figure 3, the plateor structure 20 is lformed of rigid members 30 and 3| having a resilient member or lamina 32 interposed between and secured to the lamin'ae and 3|.

'I'he lamina 32 is formed of the compositionV disclosed -in my copending application Serial No. 80,017 for Vibration absorbing composition, and structures embodying the same, filed May l5, 1936, and may be generally described as consisting of a mass of rubber or rubber-like material having particles of cork or other bodily compressible material interspersed therethrough. As is fully described in the above mentioned ap. piicatlon, the provision of cork particles, for example, in the rubber mass permits-the composition .to be .compressed upon itself so that it may be used in a lconfined space. As is well known,

rubber alone is not compressible when confined, while cork,4 comprising substantially 50% air Y cells or voids by volume, may be readily compressed upon itself. The combination of the two substances permits the rubber to be deflected within the bodily connes of the element 32, because, under compression, the mass of rubber will exert pressure upon the cork particles, coni-4 pressing the latter.

The use of a rail supporting device of the type disclosed above in combination with the vibration absorbing structure illustrated in Figure 3 insures that the rail will be nrmly secured against lateral movement since no provision need be made in the device for external deflection of the resilient material. Nevertheless, sound will be completely deadened and the rail may be electrically insulated from the road bed.

It will be observed that by forming the rigid elements 30 and 3l of the members 20, 2i and 22 of a rigid but non-electrical conducting material, such as stiff fiber or Bakelite. the rail will be electrically insulated from the rail supporting device. If such insulation is not desired, the deadening of sound may-be obtained merely by using metal for the rigid members Il and Il.

We claim:

1. A track rail supporting device comprising a seat member including upstanding sidewalls between which the width of the rail is adapted to lie, a bodily compressible resilient element rigid along a horizontal plane positioned at the bottom. of the space defined between said upstanding side walls, bodily compressible resilient elements rigid along a vertical plane positioned at the sides of auch space, clamping members secured to said upstanding walls and extending inwardly over the space defined therebetween. and bodily compressible resilient elements rigid along a horizontal plane positioned between the under-surfaces of said clamping members and the upper surfaces of the lflange of the rail adapted to be secured in the device.

2. A track rail supporting device comprising a seat member including upstanding side walls between whtch the width of the rail is adapted to lie. a bodily compressible resilient element rigid along a horizontal plane positioned at the bot-l tom of the space denned between said upstanding side walls, clamping members secured to said upstanding walls and extending inwardly over the space defined therebetween, bodily com- HARRY M. AUSTIN.V

JAMES A. MUIR. 

